Electric heater for bonbon-kettles.



Wl S. HADAWM, 3R. ELETRiC HEATER FOR SONBON KETTLES. APPLICATION FiLED SEPTx 26,1913. 1,2385142, menwd Dee. 1916:

2 sHEiTsL-SHEET 2.

UNITED STATES PATENT OFFICE.

"WILLIAM S. HADAWA'Y, JR., OF NEW ROCHELLE, NEW YORK.

ELECTRIC HEATER FOR BONBON-KETTLES.

Specification of Letters Patent.

Patented Dec. 12, 1916.

Application led September 26, 1913. Serial No. 791,933.

T all whom may concern Be it known that l, lVILLIAM S. HADA WAY, Jr., a citizen of the United States oi America, and a resident of New Rochelle,

county of l/Vestchester, and State of New as is adapted for supplying heat to bonbon lli kettles or other cooking vessels.

@ne object of myfinvention is to provide a relatively simple and particularly effective device of the character'above indicated that shall comprise a plurality ofheaters of ditierent types.

Another object is to provide-heaters of such types as shall be adapted to coperate to perform 'the work of heating sugar and, like substances in a reliable and an otherwise ner.

@ther je and advantages of my invention will be hereinafter set forth.

Reterri g the drawings t. Figure l is a sectional elofation oi an electrically heated bonbon kettle arranged and constructed in accordance with my invention. A portion of the remove` le heater is shown in sectional elevation in Figz and in plan view in Like characters ot reference designate corresponding` parts in all the figures.

A table or bench is indicated in section at 10. a hollow cylindrical heat insulating jacket 11 being secured to the table by bolts- 1Q. There is a circular hole 13 in the table l0 and the insulating jacket 11 comprises an annular disk 14 which is arranged lsubstantially concentric with the hole 13 in` the table and extends beyond the outer cylindrical surface 15 of the jacket to form a flange. The hole in the annular disk i4 is smaller than `the hole 13 in the table and consequently the disk provides a ledge or shoulder 1'?.

ln addition to the disk 14 the jacket consists of a cylindrical outer shell 18 and cylindrical inner shell i9 which is annul: l f inset at 21, to increase the thickness ot the jacket at the top. The shells are preferably formeel Sheet metal and the jacket is packed with some suitable insulating material such as mineral wool.

A cylindrical shield preferably formed of open mesh screening is supported within the jacket by means of a flange 26 which rests upon the ledge 17. The shield is further provided at its lower end with an inwardly extending flange 27 on which is supported. an annular member 28 having its upper end curved inwardly as shown in Fig. 1 of the drawings.

A bonbon kettle 30 or other cooking vessel is supported by a llange 31 on the ledge 17, i

the flange resting on the flange 26 of the 4shield and the body of the kettle being largely below the surface of the bench or table 10.

Below the overhangingportion of. the insulating jacket is an annular space 35 and below the shield 25 is a cylindrical space in which heaters are disposed.

The structure of the heater apart 'from the kettle and the insulating jacket is shown in Figs. 2 and 3 and comprises a cylindrical shell 4() which acts as a reflector having a transverse intermediate disk 41 secured to it near its lower end and a bottom disk 42 which is secured to the shell and extends beyond its lower end to form a flange 48. The size of the cylindrical shell is Such that it tits loosely into the insulating jacket while the 'flange 43 engages the lower end of the jacket, the heater being held in place by screws 44 which extend downwardly from the jacket through suitable holes in the flange and wing nuts 45. base plate 42 is reinforced by a plate 46 to which terminal members 47 are secured, a cap or shield 48 having an inlet bushing 49 being secured to the plate 46 and constitute ing a protecting covering for the terminals. A disk stove heater unit 50 is mounted on the transverse disk 41 near its center and is arranged in the cylindrical space below the kettle to supply heat thereto. In the annular space 35, between the jacket and the shield are disposed a plurality of radiant heater units 55. Each of these units cornprises a heating resistance conductor 56 which is adapted tooperate at al very high temperature for a comparatively short time and whichvis particularly designed with a view to producing an intense heatimmef diately when energy is supplied `to it. `On' the other hand the disk4 stove unit- 50-S ar.--

The center of the and paciculaily adapted to proat a relatively low temperature "ating continuously -tor a long The heater unit 5.5 'is fully 'et forth in my copending ap ll'umber 791,933. tiled of even and therefore a detailed de-l tae saine is unnecessary. manufacture candy and. the g or sugar, it is particularly desirable n"o ile, when is tiret introl into kettle, a very high tempera a comparatively short time until the v i re of the of sugar is brought O po. .it ann the sugar is melted. rafale to hold the temperature the substantially con Yiger ot overheating and :zout danger of injury to the heater. ln,

accomplish these results in a par- `rly effective manner, l have combined, ir. single heating device, a set of heater units which by' reason of their structure and designa.7 arel particularly well adapted for 235 producing a high temperature immediately upon the application of electric energy to tlieiiilV ln other words, heater units which have practically no heat capacity or inertia, together with 'a heater which has heat capacil ily which is adapted to operate for a long period producing the correct amount of heat :for holding the mass at a constant tempera- "lllleiuterior surfaceof the shell 40 is pref- W eralilyliighly.polished so that a large prolori the hi jh temperature heat prof l in the radiant units G is reflected upfn the kettle 3G and consequently has the maximum effect in heating the same. Since tb shield is formed oi? a relatively open sli screen, it does not materially interfere the ra diatioii above referred to.

have Tracre fully pointed out in the a i n ferialllumber 791,931,

d by .adiation relative to ransterred by convection, .e intensity oit the heat and of the relector utilized. ned the radiant heaters 5G paiL n: oit this principle in order heat may largely na The heater 5l) on to hold' the tmconstant and it may l 1r'ely upon convection 'he kettle. For this ne kettle so that l be applied evenly have desi cularly ny' le l placed 7' f Te indicated, the spen heater units rorms no or my prcsei and, t e cli' ot t e heaters 56 as distvv ltieater all, to the t the proportion foundation of my invention,` and while believe the structural arrangement of the' particular cooking vessel or to any particu.

lar class of service and I intend that only such limitations be im. mfed as are indicated in the appended claims.

A l; Vting device constructed in accordance with my invention may be very success- -iully utilizedor heating glue which acts very much like sugar and requires a high initial temperature in order to melt it in a short time. l

lil/hat l claim is:

l. ln an electric heater, the combination with a relatively stationary hollow cylindrical insulating jacket vertically disposed, of

a heater comprising a base plateremovably secured to the bottom of the jacket, an intermediate plate spaced from the base and a plurality of radiant heater units secured to tlieintermediate plate near the inside walls of the jacket and a flat convection heater secured to the intermediate plate near its center.

2. |lhe combination with a relatively stationary hollow cylindrical insulating jacket vertically disposed and having an inner plate at the top forming a ledge on which a cooking vessel is adapted to be supported with the body of the vessel extending into the jacket, of a heater comprising a base plate removably secured to the bottom of the jacket, an intermediate plate spaced from the base and a plurality of radiant heater units secured to the intermediate p ate near the inside walls of the jacket and a flat con! plate removably secured to the bottom of the jacket, a, .hollow cylindrical reflector secured to the base and extending upwardly into the jacket, a transverse intermediate plate spaced from the basesecured tothe reilector and a plurality of electric heater units removably secured to the intermediate plate and extending upwardly adjacent to the walls of the reflector.

l. "l`hc combination with a relativdystationary hollow cylindrical insulatngfjacket i @su Vi.

comm to 80 2 he to@ in fr the im et 0 dos@ sing e bot- .Y jacke l; 1cm it 

